Title :
Characterization of eROSITA PNCCDs
Author :
Granato, Stephanie ; Andritschke, Robert ; Elbs, J. ; Meidinger, Norbert ; Struder, L. ; Weidenspointner, Georg ; Krumrey, M. ; Scholze, Frank
Author_Institution :
MPI Semicond. Lab., Munich, Germany
Abstract :
The eROSITA (extended Roentgen Survey with an Imaging Telecope Array) instrument on the satellite Spektrum-Roentgen-Gamma will perform an all-sky survey as well as pointed observations in the low and medium X-ray energy regime. The seven PNCCD detectors for this instrument have been developed and manufactured at the Max Planck Institute (MPI) Semiconductor Laboratory. We summarize the characterization of this type of PNCCD regarding the spectral redistribution function in the photon energy range from 100 eV to 11 keV. We present the results of Geant4 simulations compared to our measurements. The observed spectral features and their physical origin inside the detector are explained. An overview on the different contributions to the energy resolution of the detector is given.
Keywords :
X-ray detection; semiconductor counters; Geant4 simulations; Max Planck Institute Semiconductor Laboratory; PNCCD detectors; all-sky survey; eROSITA PNCCD; eROSITA instrument; electron volt energy 100 eV to 11 keV; extended Roentgen Survey with an Imaging Telecope Array; low X-ray energy regime; photon energy; satellite Spektrum-Roentgen-Gamma; spectral redistribution function; Absorption; Aluminum; Detectors; Noise; Photonics; Semiconductor device measurement; Silicon; X-ray CCD; eROSITA; spectral redistribution; spectral response;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2013.2269907
